Start by washing your eyelids with an oil-free cleanser (the adhesive glue won't stick to oily skin).
Remove the faux lashes from the storage case, and give them a test run by holding them in place across your eyelid (without the adhesive). Then use a pair of sharp scissors to trim the lashes, as needed, a few hairs at a time.
Use a toothpick to apply a thin line of glue across the entire length of the roots of the false eyelashes (never apply glue directly to your own eye).
Let the adhesive set for about a minute or until it's tacky.
Place the lashes along the base of your lash line, as close to the roots as possible, starting from the inside corner. If you're using individual lashes, though, work from the outside corner of the eye to the inner corner. Press and hold in place for ten to 15 seconds.
Release the lashes and let them dry for a minute or two.
As a finishing touch, says Longo, sweep a coat of mascara across both your natural and false lashes to bind the two together.
If properly cared for (that means you clean and store them after each use), most lash extensions can be used up to four or five times. When you're ready to remove them, it's important to be gentle.